CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 74,281	$ 69,710
Receivables, net of allowances of $4,001 and $4,799, respectively	278,369	262,845
Recoverable income taxes	7,673	7,921
Prepaid expenses	29,961	23,219
Other current assets	29,010	58,126
Total current assets	419,294	421,821
Noncurrent assets
Accrued receivables, net	187,133
Property and equipment, net	80,775	80,228
Software, net	150,653	155,386
Goodwill	909,691	909,691
Intangible assets, net	188,688	191,281
Deferred income taxes, net	22,109	66,749
Other noncurrent assets	56,826	36,483
TOTAL ASSETS	2,015,169	1,861,639
Current liabilities
Accounts payable	33,479	34,718
Employee compensation	34,350	48,933
Current portion of long-term debt	20,379	17,786
Deferred revenue	111,639	107,543
Income taxes payable	6,178	9,898
Other current liabilities	64,312	102,904
Total current liabilities	270,337	321,782
Noncurrent liabilities
Deferred revenue	45,380	51,967
Long-term debt	658,861	667,943
Deferred income taxes, net	26,564	16,910
Other noncurrent liabilities	35,005	38,440
Total liabilities	1,036,147	1,097,042
Commitments and contingencies
Stockholders' equity
Preferred stock; $0.01 par value; 5,000,000 shares authorized; no shares issued at March 31, 2018 and December 31, 2017
Common stock; $0.005 par value; 280,000,000 shares authorized; 140,525,055 shares issued at March 31, 2018 and December 31, 2017	702	702
Additional paid-in capital	616,913	610,345
Retained earnings	775,420	550,866
Treasury stock, at cost, 24,130,770 and 23,428,324 shares at March 31, 2018 and December 31, 2017, respectively	(342,316)	(319,960)
Accumulated other comprehensive loss	(71,697)	(77,356)
Total stockholders' equity	979,022	764,597
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 2,015,169	$ 1,861,639

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.